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Ferguson TO35 Clunking Noise


 
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willor
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PostPosted: Mon May 17, 2021 8:22 pm    Post subject: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

I was out bush hog mowing with my 1956 TO 35 and noticed it was starting to get hot. I started to head to the house to blow off the radiator to see if that was the cause. On that last pass I hit a patch of tall grass which bogged down the tractor and when it recovered it it had a clunking noise. From what I can tell it sounds like it is in the bottom of the engine ie oil pan. Any ideas what it could be? Was having problems with the governor before this - could the balls in the governor come loose and fall into the pan?
 
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Steve@Advance
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PostPosted: Tue May 18, 2021 9:29 am    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

Never seen the balls come out, but the cage that guides them is a common failure.

Pieces can get caught in the cam gear, embed between the teeth, or break a tooth.

Did the oil pressure change any?
 
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willor
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PostPosted: Tue May 18, 2021 9:55 am    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

The oil gauge is not working so I don't know. Are you thinking the Oil pump?
 
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John Deere D
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PostPosted: Tue May 18, 2021 10:33 am    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

Connecting rod bearing failed........????

Bob..
 
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willor
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PostPosted: Tue May 18, 2021 10:50 am    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

I don't see any metal in the oil - What's the best way to diagnose that potential problem?
 
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John Deere D
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PostPosted: Tue May 18, 2021 11:36 am    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

Remove OIL PAN....?

I have no experience with this model of Tractor.............:(

I would look into removing the Engine OIL drain plug....inset a borescope and view the connecting rods BIG ENDS..

Bob..
 
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Steve@Advance
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PostPosted: Tue May 18, 2021 5:49 pm    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

Oil pump maybe...

It is driven by the crank gear, and has a reputation of sudden failure. The internal drive fails. Not very likely to be the cause of the knocking.

But if the pump failed it probably caused more damage.

Really need to at least temporary an oil pressure gauge on it, see what you get. They don't run a lot of pressure, but it should have some pressure at idle, around 10-15 PSI hot revved up is about the safe minimum. Too bad you don't have a gauge to look for a sudden drop from normal.

A rod knock will change by pulling plug wires. The rhythm will change, go to a double rap when the wire to that cylinder is pulled.

Main knock is usually quiet at idle, gets worse with RPM or load.

Cracked piston skirt, failing wrist pin, will usually go quiet with the plug wire pulled.

Something suck in the timing gears or a chipped tooth will generally stay the same all the time, just vary with engine speed.

If you drain the oil, catch it in a clean container, check it for glitter. You can also cut the filter open, see what it has caught.
 
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willor
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PostPosted: Tue May 18, 2021 9:05 pm    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

The knock does get quiet at idle and louder with RPMs. What is a main knock?
 
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Tom H.
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PostPosted: Wed May 19, 2021 5:06 am    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

Its a heavy cast oil pan so drain oil look for metal and then pull the pan. Simply wiggling the connecting rods will give you an idea what you have going on. Start with that then remove the connecting rod bearings check the wear. Let us know.

When removing this pan I put a floor jack under it just to keep it from falling.
 
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Steve@Advance
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PostPosted: Wed May 19, 2021 7:18 am    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

Main knock is from failed crank support bearings.
 
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willor
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PostPosted: Wed May 19, 2021 7:20 am    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

When I wiggle the connecting rods - should they move around much or be tight?
 
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willor
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PostPosted: Sat May 22, 2021 1:03 pm    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

had a little time to check on suggested items

1. Pulled wires - no change in noise
2. removed fan belt - no change in noise
3. Tightened front bolt on fan belt pulley - no change in noise
4. Put an oil gauge on it - Reads between 25 and 30 PSI at mid throttle
5. Tried a stethoscope and there actually seems to be two noises. I can't locate the clink because it comes and goes - but there is a louder than usual heavy clicking noise down low on the engine almost a clickity clikity

Since I know the oil pressure is good, I plan to pull the pan next time I get an hour or so a check out the main crank bearings and the connector shaft bearings.

Let me know if you folks think of anything else to check
 
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Ark68SS
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PostPosted: Sat May 22, 2021 1:40 pm    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

willor wrote:

3. Tightened front bolt on fan belt pulley - no change in noise


Does this mean the crankshaft pulley bolt? If not, be sure that it's tight.
BillL
 
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Tom H.
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PostPosted: Tue May 25, 2021 11:14 am    Post subject: Re: Ferguson TO35 Clunking Noise Reply to specific post Reply with quote

Should only slide a tad not wiggle
 
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